TeamSpeak (Guild Software) has been active in the game server and voice server market since 1998. TeamSpeak is known for its user-friendly and comprehensive management interface. At present, TeamSpeak offers two supporting software editions: TeamSpeak 2 and TeamSpeak 3. The latest release of TeamSpeak includes many improvements in quality, security and customizable user interface. Nearly all operating systems are supported: Windows, Mac, Linux, Android and iOS. TeamSpeak is therefore unique in its kind.

i3D.net takes great care of voice servers like TeamSpeak, thanks to our expert engineers, excellent network connectivity and available bandwidth across the globe. Quality of service in support of your voice server connectivity is assured. Our TeamSpeak servers are hosted in a specially equipped server environment to provide you with the finest quality.

The software TeamSpeak 2 can be found here (for free).
The software for TeamSpeak 3 can be found here (for free).
For more information about the TeamSpeak, please see the TeamSpeak knowledgebase here.